Class: GV::Valley::Balancer

Inherits:
Bedrock::Service
  • Object
show all
Includes:
Common::PipeHelper
Defined in:
lib/gv/valley/balancer.rb

Constant Summary collapse

INDENT = 
"        "

Instance Method Summary collapse

Instance Method Details

#reload(&block) ⇒ Object

reloads haproxy config



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# File 'lib/gv/valley/balancer.rb', line 16

def reload &block
  
  @block = block
  
  indicate "Loading Haproxy config"
  
  config = File.read("#{GV::Valley.root}/scripts/haproxy.cfg")
  target_file = "/etc/haproxy/haproxy.cfg"
  acl = ""
  backend = ""
  
  App.all.each do |app|
    
    app["domains"].each do |domain|
      acl << "#{INDENT}use_backend b_#{app["name"]} if { hdr(host) -i #{domain} }\n"
    end
    
    backend << "backend b_#{app["name"]}\n"
    app["ps"]["web"]["containers"].each do |container|
      host = container['HostConfig']['PortBindings']["#{App::PORT}/tcp"].first
      backend << "#{INDENT}server srv_#{container['ID'][0..6]} #{host['HostIp']}:#{host['HostPort']}\n"
    end
    
  end
  
  config.gsub!(/^\#FRONT$/,acl) 
  config.gsub!(/^\#BACK$/,backend) 
  
  pipe "rm #{target_file}"
  File.open(target_file,File::RDWR|File::CREAT){|f| f.puts config }
    
  pipe "chmod 0770 #{target_file}"
  pipe "chgrp haproxy #{target_file}"
  pipe "service haproxy reload", &block
  
end